A theoretical study on the efficiency of DSSC, based on the contact of sensitive ruthenium dye N719 with TiO2 hetero junction using an electron transfer process

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Bulletin of Materials Science Pub Date : 2025-04-11 DOI:10.1007/s12034-025-03409-2

Mudhafar Jebur Ali, Hadi J M Al-Agealy, Hossain Milani Moghaddam

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Abstract

This work aims to study and calculate the efficiency of ruthenium dye-sensitized Ru(N719)-TiO₂ solar cells (DSSCs) based on quantitative theoretical approach to electron transfer in a hetero junction device. The J–V characteristics of Ru(N719)-TiO₂ hetero junction-based DSSC were calculated to solve the current density equation using MATLAB software. The energy levels of two materials in Ru(N719)-TiO₂ hetero junction device were assumed to be continuous levels for this purpose. Generally, the current and current density increased with increasing coupling constant. The efficiency of Ru(N719)-TiO₂ DSSC depends on many parameters. Transition energy, coupling constant and concentration play a critical role in the calculation of current density and fill factor and performance of Ru(N719)-TiO₂ DSSC. The results show a maximum efficiency in contacting ruthenium Ru(N719) with TiO₂ DSSC appeared at concentration \(7 \times 10^{18} \; {\text{cm}}^{ - 3}\) compared to the low efficiency at low concentration \(3 \times 10^{18} \;{\text{cm}}^{ - 3}\). These results showed that high concentration can increase the resulting efficiency value. The Ru(N719)-TiO₂ DSSC using acetonitrile solvent at a low carrier concentration of \(3 \times 10^{18} \;{\text{cm}}^{ - 3}\) demonstrates a low open circuit voltage and shortest circuit current density with a low fill factor under an optical density of (100 mW cm⁻²) at (AM 1.5) and minimum overall solar energy conversion efficiency Ru(N719)-TiO₂ DSSC, at higher carrier concentration of about \(7 \times 10^{18} \;{\text{cm}}^{ - 3}\) show high open circuit voltage and current density with a high fill factor to produce maximum solar energy conversion efficiency.

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基于电子转移过程中钌敏感染料N719与TiO2异质结的接触，对DSSC效率进行了理论研究

本工作旨在研究和计算钌染料敏化Ru(N719)-TiO2太阳能电池（DSSCs）在异质结器件中电子转移的定量理论方法的效率。利用MATLAB软件计算Ru(N719)-TiO2异质结DSSC的J-V特性，求解电流密度方程。为此，假设Ru(N719)-TiO2异质结器件中两种材料的能级为连续能级。一般来说，电流和电流密度随耦合常数的增大而增大。Ru(N719)-TiO2 DSSC的效率取决于许多参数。跃迁能、耦合常数和浓度对Ru(N719)-TiO2 DSSC的电流密度、填充系数和性能的计算起着至关重要的作用。结果表明：钌钌（N719）与TiO2 DSSC的接触效率在浓度为\(7 \times 10^{18} \; {\text{cm}}^{ - 3}\)时最高，在浓度为\(3 \times 10^{18} \;{\text{cm}}^{ - 3}\)时效率较低；结果表明，浓度越高，所得效率值越高。在低载流子浓度\(3 \times 10^{18} \;{\text{cm}}^{ - 3}\)下使用乙腈溶剂制备的Ru(N719)-TiO2 DSSC具有较低的开路电压和最短的电路电流密度，在（AM 1.5）光密度（100 mW cm−2）下具有较低的填充因子，整体太阳能转换效率最低。在载流子浓度约为\(7 \times 10^{18} \;{\text{cm}}^{ - 3}\)时，显示出高开路电压和高填充系数的电流密度，以产生最大的太阳能转换效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.